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Italtherm CITY CLASS 20 F User Manual

Italtherm CITY CLASS 20 F
32 pages
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CITY CLASS
Manual
SERVICE
ENG
20 F - 25 F - 30 F - 35 F
20 FR - 25 FR - 30 FR - 35 FR
Green Heating Technology
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Italtherm CITY CLASS 20 F Specifications

General IconGeneral
Heat Output (kW)20
NOx Class5
TypeCondensing
Gas TypeNatural Gas
Dimensions (HxWxD mm)700x400x300

Summary

PCB Code Management

PCB Boiler Combustion Automatic Check

Automatic procedure for setting boiler combustion based on PCB code.

PCB Boiler Reset and Configuration

PCB Code Configuration

Procedure to configure the boiler model after PCB reset or replacement.

First Ignition Installation Checklist

System Installation Checks

Verification of flues, hydraulic, gas, and electric connections.

Syphon and Flue Gas Checks

Checks for condensate syphon and flue gas analysis (CO2).

Boiler Control Panel and Display Guide

Front Control Panel Overview

Description of the control panel buttons, knobs, and their functions.

Display Symbols and Indicators

Explanation of various symbols and display indicators on the boiler.

Accessing Boiler Internals

Boiler Internal Components (Model F 20-30)

Boiler Internal Components (Model FR 20-30)

Boiler Internal Components (Model F 35)

Boiler Internal Components (Model FR 35)

Hydraulic Schematic (F Model)

Hydraulic Schematic (FR Model)

Electrical Diagram (F Model)

Optional External Devices

Details on optional external devices like thermostats and sensors.

Electrical Diagram (FR Model)

Optional External Devices

Details on optional external devices like thermostats and sensors.

Heating System Filling Procedure

System Filling and DHW Tank Filling

DHW Storage Tank Filling

Procedure for filling the DHW storage tank.

DHW Exchanger Components

Dismounting & Mounting: Flow Stat & 3 Way Valve

Flow Stat Component Operations

Procedures for dismounting and mounting the flow stat.

3 Way Valve Component Operations

Procedures for dismounting and mounting the 3-way valve.

Dismounting & Mounting: Burner and Fan

Burner and Fan Dismounting

Steps for dismounting the burner and fan.

Burner and Fan Mounting

Steps for mounting the burner and fan.

Gas Valve Calibration and Pressure Settings

Gas Valve Calibration

Steps and parameters for calibrating the gas valve.

Gas Supply Pressure Data

Table detailing gas supply pressure specifications and injector data.

Accessing and Modifying Boiler Parameters

Initial Setup for Parameter Access

Steps to set the boiler to OFF mode and prepare for parameter access.

Navigating and Changing Parameters

How to navigate through and modify parameter values.

Storing Parameter Changes

Procedure for saving changes and exiting parameter mode.

Boiler Parameter Reference Table

Boiler Error Codes and Suggestions

Pump Capacity Diagram (Model F)

Pump Capacity Diagram (Model FR)

Technical Data: Heating Specifications

Technical Data: Electrical & Gas Supply

Technical Data: General & Safety Specs

Technical Data: Gas Consumption & Dimensions

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